Reliability analysis of a structural ceramic combustion chamberThe Weibull modulus, fracture toughness and thermal properties of a silicon nitride material used to make a gas turbine combustor were experimentally measured. The location and nature of failure origins resulting from bend tests were determined with fractographic analysis. The measured Weibull parameters were used along with thermal and stress analysis to determine failure probabilities of the combustor with the CARES design code. The effect of data censoring, FEM mesh refinement, and fracture criterion were considered in the analysis.
Document ID
19920032967
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Salem, Jonathan A. (NASA Lewis Research Center Cleveland, OH, United States)
Manderscheid, Jane M. (NASA Lewis Research Center Cleveland, OH, United States)
Freedman, Marc R. (NASA Lewis Research Center Cleveland, OH, United States)
Gyekenyesi, John P. (NASA Lewis Research Center Cleveland, OH, United States)